Fuel mixer for internal-combustion engines



c. G. PRYTs FUEL MIXER FORHINTRNAL CoMBUsTIoN ENGINES A illlllll l1||||| Aug. 12 1924.

Patented Aug. 12, 1924.,

CARL GUST PRYTS, OF MILBANK, SOUTH DAKOTA.

FUEL MIXER FOR INTERNAL-COUSTION ENGINES.

Application led April 21, 1924. Serial No. 707,962.

To all whom t may concern.'

Be it known that 1, CARL G. PRYTS, a citizen of the United States, residing vat Milbank, in the county of Grant and State of South Dakota, have invented certain new and useful Improvements in Fuel Mixers for Internal-Combustion Engines, of which the-'following is the specification.

This invention .relates to fuel mixers for internal combustion engines, and has for one of its objects to provide a relatively small and compact apparatus which will eiiiciently intermix the particles of fuel and air, to the end that a better and more comn bustible mixture will be obtained.

A further objectof the invention is to provide a device of this character which can be readily inserted in the fuel line, preferably between the carburetor and the intake manifold of the engine.

A still further object of the invention is to provide a device of the character described, which may be readily applied to new engines, aswell as to those which are already in use.

A still further object of the invention is to provide a fuel mixer which will be simple in construction, comparatively inexpensive to manufacture and install and more efficient in use than those which have been heretofore proposed.

With the above and other objects in view, the invention consists in the novel details of construction and combinations and arrangements of parts, more fully hereinafter described and particularly pointed out in the appended claims.

Referring to the accompanying drawing, forming a part of this specification in which like reference characters designate like parts in all the views;

Fi ure 1 is a diagrammatic side elevationa view ofa portion of an internal combustion engine, showing the intake manifold and carburetor therefor, with a device constructed in accordance with the present invention in place thereon; t

Fig. 2 is an enlarged top plan View of a fuel mixer constructed in accordance with the present invention;

Fig. 3 is a side elevational view of the mixer shown in Fig. 2;

Fig. 4 is a central vertical sectional view of the parts shown in Fig. 2, taken 4a proximately on the plane indicated by t e line 4 4 of the said figure, looking in the direction of the arrows;

Fig. 5 is a similar view taken at right angles to Fig. 4 and approximately on the plane indicated by the line 5 5 in Fig. 2, looking in the direction of the arrows; and,

lFig. 6 is a bottom plan view of the mixer. Referring particularly to the said drawings the numeral 10 indicates any suitable internal combustion engine, as for example, the motor of an automobile, which is rovided with the usual intake manifol 11 having the downward extension 12 to the lower end of which is normally connected a carburetor 13. The mixer 14, constituting the present invention, as will be clear from Fig. 1, may be interposed between the outlet of the carburetor 13 and the lower end of the intake manifold branch 12.

The said mixer preferably comprises a tube 15 of relatively thin metal the lower end of which is provided with the outwardl extending ange 16, provided with the bo t hole 17, which flange, as will be clear from Fig. 1, may be interposed between the flanges of the carburetor and intake manifold, as shown.

The upper portion of the tube 15 is cut l are alternately arrange around the circumference of the tube.' The .prongs 19 are preferably shorter than the rongs 20 and are bent inwardly atan ang e of approximately sixty degrees, as clearly shown in Figs, 4 and 5, so as to provide a more or less truncated cone, as willbe readilyunderstod from the drawings.

The prongs 20 extend upwardl substantially strai 'ht, or preferably ared outwardly slig tly, and have their upper ends 21 bent over inwardly, at approximately a right angle, to the body portion. The two sets of prongs thus form a chamber 23 1n whch there is dis osed a coiled spring 24, which is preferab y of such dimensions as to provide two layers, 25 and 26. The lower layer rests upon the prongs 19 and 1s confined by the body portions of the prongs 20, as clearly shown in Figs. 4 and '5, whi e the upper layer is likewise confined by. the body portions of the prongs 20 and its upper surface is engaged by the turned-1n ends 21 of the said prongs.

Located in the lower solid portion of the Verably V-shaped in cross section, an

triangular chamber 28, and the side walls of the same with the air particles to the end 29 are provided with relatively small open-- ings 30, through which the fuel mixture from the carburetor may nd its way into the said chamber 28. The top wall 31 is provided with an outlet opening 32, located axially of the tube 15, through which the gas mixture may pass upwardly into the uprper portion of the device.

he bridge member 27 is provided at its endsv with'the wings 33, which frictionally engage with the side walls of the tube 15, and the lower portions of the tongues 19 to readily removably hold the bridge member in osition. The top member 31 of the bri ge membe-r is also provided with two pairs of ears 34, which are spaced apart and are drilled to provide journals for the shafts 35, which shafts carry a plurality of vanes 36, extending radially therefrom, as will be clear from Figs. 4, 5 and 6. There is thus provided a pair of fan wheels which are rotatably mounted upon the bridge member 27 and which may be operated by the suction of the en ine to break up the fuel particles and pr uce a better inter-mixture that a more combustible mixture will be had.

The operation of the device will be clear from the foregoing, but it might be briefly stated that with a mixer of the present construction in place in the fuel line of an internal combustion engine, that the suction of the engine will draw the fuel and air from the carburetor in the well known many ner into the lower tubular portion 15 of the present device. A portion of it will, of course, pass upwardly, outside of the bridge member 27, being deflected by the inclined walls thereof a ainst the lower portions of the vanes 36, w ich will produce a rotation of the said vanes in opposite directions. This rotary movement of the vanes will tend to break up the particles of fuel and air and produce a bette-r mixture of the two. Another portion of the fuel mixture will be sucked through the small openings 30 into the chamber 28, and thence through the outlet passage 32, passing between the wheels lor vanes 36 and directly up through the coiled spring 24.

The fuel and air panticles will be further broken up and inter-mixed, as they pass the inwardly bent tongues 19, and this mixing will be further enhanced by passing through the aces between the coils of the spring 24. T e said sprin will not only serve to better inter-mix t e gas and air particles, but it will also tendI to direct the mixture away from the walls of the manifold pipe 12, which, as is well known, is quite important when starting a cold motor, since, if the fuel mixture is permitted to come into contact with the cold walls of the manifold pipe, there will be a tendency for the gas particles to liquefy and make it harder to start the motor. On the other hand, if the particles can be kept away from the cold walls of the manifold pipe, the starting of the motor will be greatly facilitated.

It will thus be seen that lthis invention provides a small and compact |device, which may be sold as an accessory and which may be applied to any motor by the owner. It furthermore provides a device which will effectively break u and inter-mix the fuel particles with the air particles and after this inter-mixture is accomplished, it will tend to keep the mixture away from the cold walls of the intake manifold to the end that liquefication of the gas particles and separation thereof from the air particles will be prevented, while *the motor is cold. On the other hand, as the motor warms up the heat will be transmitted fromthe manifold walls to the prongs 20 and to the spring 24, and this heat will materially yassist in the production of a more combustible mixture of thefuel and air, as will be readily understood.

. It will be noted from Figs. 5 and 6, that the vanes 36 are preferably given a slight spiral twist, which further assists in their rotation and mixing action.

While one form of the invention has been illustrated and described, it is obvious that those skilled in 'the art may vary the details of construction as well as the arrangement of parts, without departing from the spirit of the invention, and therefore it is not wished to be limited to the above disclosure except as may be required by the accompanying claims.

lVhat is claimed is:

1. In a mixing device a tubular member provided with two sets of spaced inwardly extending prongs; a bridge member positioned within said tubular member and provided with inclined gas deflecting surfaces; and a pair of fans provided with vanes arranged in the path of the gases deflected by said surfaces, whereby said fans may be caused to rotate.

2. In a mixing device, a tubular member provided with two sets of spaced inwardly extending prongs; a bridge member removably positioned within said tubular member and provided with inclined gas deflecting surfaces, said surfaces being also provided with passages whereby a portion of said gas may pass through said member; and a pair of fans provided with vanes arranged in the path of the gases deflected by said surfaces, whereby said fans may because gas may pass through said member; a pair 10 to rotate. -1 of fans provided with vanes arranged in the 3. In a mixing device, a tubular member` path of the gases deec'bed by said surfaces, provided with two.sets of spaced inwardly whereby said fans may be caused to rotate;

5 exfending prongs; a bridge member removand a coiled spring arranged to form an ably positioned within said tubular member annulus positioned end held between said 15 and provided with inclined gas deflecting sets of prongs. surfaces, said surfaces being also provided with passages whereby a portion of said CARL GUST PRYTS. 

